In a changing environment, the inability to adapt will eventually lead to failure. In the high-stakes, fiercely competitive domain of national security and intelligence, the lack of adaptive capacity can lead to disastrous consequences, affecting not just the intelligence apparatus itself but the society it is meant to safeguard. Today’s complex security environment poses a tremendous challenge for intelligence organisations and wider governance structures. Bringing together academics and practitioners, this multidisciplinary volume explores the various facets of adaptation in intelligence. Drawing on theoretical and empirical research, it examines the mechanisms that facilitate and impede adaptation in intelligence, and assesses the significance of adaptability in the wider national security context. The book will appeal to scholars and students of intelligence studies, public administration, political science and international relations, as well as national security policymakers.